[Evolution of the incidence of colonized and infected patients by VIM carbapenemase-producing bacteria in a pediatric hospital in Spain]. / Evolución de la incidencia de pacientes con colonización e infección por bacterias productoras de carbapenemasas VIM en un hospital pediátrico en España.

OBJECTIVE: The aim of this study is to describe the evolution of the incidence of infected and colonized patients with carbapenemase VIM-producing bacteria (CPB-VIM) at a national referral pediatric center in Madrid, Spain, between 2012 and 2015. METHODS: Descriptive epidemiological surveillance study. The surveillance system included case detection (screening for BPC colonization in all admitted patients, with periodicity according to the ward) and control measures (contact precautions, identification of previously colonized patients at admission, environmental cleaning, education, supervision of contact precautions, and patient cohort). All hospitalized patients with first positive microbiological sample for CPB-VIM in 2012-2015 were included. Colonized patients were followed through clinical history to evaluate later infection. RESULTS: We found 239 colonized and 51 infected patients with CPB-VIM (49.3% women, 47.6% were 5 months old or younger, 52.1% admitted at Intensive Care Unit). Infection and colonization incidence were, respectively, 2.6 and 6.7 cases per one thousand hospitalized patients in 2012, 1.8 and 10.0 in 2014 and 0.3 and 5.0 in 2015. Within these patients, 84.4% shared ward with other patient with previous positive sample. 13.0% (31/239) of colonized patients had a subsequent infection. CONCLUSIONS: We have shown data of pediatric patients affected by BPC-VIM, collected from an epidemiological surveillance system that included systematic screening at a national referral center. After an epidemic period, the incidence of cases went down. The surveillance and infection control measures intensification, as well as coordination with involved departments, were key in the handling of the situation.

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Epidemiology and control measures of an OXA-48-producing Enterobacteriaceae hospital-wide oligoclonal outbreak.

The main objective of our study was to describe the epidemiological and microbiological features of an oligoclonal hospital-wide outbreak caused by OXA-48-producing Enterobacteriaceae (OXA-48-PE). OXA-48 is a carbapenemase belonging to Ambler class D beta-lactamases, identified frequently in the Mediterranean and Southern European countries, and associated with several Enterobacteriaceae species. An outbreak of OXA-48-PE with a complex epidemic pattern was detected in January 2011. Initial control measures included contact precautions and the reinforcement of infection control practices, but despite all efforts made, the epidemiological situation hardly changed and new measures were implemented during 2013. An observational retrospective study was performed to describe the main features of the outbreak and to analyse the cumulative incidence (CI) trends. Eight hundred and 16 patients colonised or infected by OXA-48-PE were identified during the 2-year period (January 2013-December 2014), female 46%, mean age (s.d.), 71.6 (15.2). The samples isolated in the incident cases were rectal swabs (80%), urine samples (10.7%), blood samples (2.8%) and other clinical samples (6.6%). The most frequent OXA-48-PE was Klebsiella pneumoniae. Eleven different clones were identified, but K. pneumoniae sequence types 11 and 405 were predominant: ST11 (64.2%) and ST405 (29.3%). OXA-48-PE CI trend suffered a statistically significant change in August 2013, which continued the following months. Though we could not eradicate the outbreak, we observed a statistically significant drop in CI after an intervention for OXA-48-PE control, based on patient cohort, active surveillance, electronic alerts and reinforcement of infection control measures in a tertiary hospital.

Successful control of 2 simultaneous outbreaks of OXA-48 carbapenemase-producing Enterobacteriaceae and multidrug-resistant Acinetobacter baumannii in an intensive care unit.

BACKGROUND: This report describes a double outbreak of OXA-48-producing Enterobacteriaceae (OXA-48-PE) and multidrug-resistant Acinetobacter baumannii (MRAB) in an intensive care unit (ICU) and the effectiveness of measures implemented, including decontamination with vaporized hydrogen peroxide (VHP). METHODS: Affected patients were isolated in a confined area and cared for by dedicated personnel. Four percent chlorhexidine soap was used for patient daily hygiene. All patients are subjected to contact precautions. An in-depth cleaning of the ICU was performed with a chlorine solution, followed by decontamination with VHP. Environmental samples were taken before and after the decontamination. RESULTS: From July-October 2015, 13 patients were colonized or infected by OXA-48-PE and 18 by MRAB in the ICU. The cumulative incidence of OXA-48-PE and MRAB was 3.48% and 4.81%, respectively. In the period after the intervention, they were 0.8% and 0%, respectively (P < .001). Before the VHP biodecontamination, 4.5% of environmental samples were positive for OXA-48-PE and none for MRAB. After biodecontamination, 1.4% of samples were positive for OXA-48-PE. CONCLUSIONS: This study emphasizes the importance of environmental hygiene in the control of outbreaks caused by microorganisms of high environmental impact. The rapid effect after the VHP treatment suggests an influence of this measure in eradication.

El coste de la infección en artroplastia de cadera: estudio de casos y controles emparejado / The cost of infection in hip arthroplasty: a matched case-control study

Objetivo. La infección de localización quirúrgica (ILQ) representa el 30% de todas las causas de infecciones relacionadas con la atención sanitaria (IRAS), siendo una de las complicaciones más temidas en pacientes quirúrgicos. Se estimó el exceso de costes directos de la ILQ mediante un estudio de casos y controles emparejado y anidado en una cohorte, en un hospital de agudos en España (Hospital Universitario Ramón y Cajal). Material y método. Los casos fueron pacientes que desarrollaron un primer episodio de ILQ según los criterios establecidos por el National Healthcare Safety Network de los CDC. Los controles fueron emparejados a los casos en una razón de 1:1, teniendo en cuenta la clasificación de la American Society of Anesthesiologists, la edad, el sexo, la fecha de la cirugía y el diagnóstico principal. Resultados. Este estudio encontró que la infección en reemplazo de cadera incrementó los costes directos en un 134%. Asimismo, el exceso de costes debido a la infección causada por Staphylococcus aureus resistente a la meticilina fue 69% mayor que el exceso de costes debido a las infecciones causadas por otros microorganismos. onclusiones. La ILQ después de reemplazo de cadera sigue siendo una complicación costosa desde la perspectiva del hospital. Los costes debidos a la ILQ pueden ser utilizados para priorizar intervenciones preventivas de vigilancia y control de las infecciones relacionadas con la atención sanitaria (AU)

Objective. Surgical site infection (SSI) represents 30% of all causes of health care-associated infection (HAI) and is one of the most dreaded complications in surgical patients. We estimated the excess direct costs of SSI using a matched nested case-control study in acute-term care at Ramon y Cajal University Hospital in Spain. Material and method. Cases were patients who developed a first episode of SSI according to the criteria established by the CDC's National Healthcare Safety Network. Controls were matched to cases in 1:1 ratio taking into account the American Society of Anesthesiologists score, age, sex, surgery date, and principal diagnosis. Results. This study found that infection in hip replacement increased direct costs by 134%. Likewise, the excess cost due to the infections caused by methicillin resistant Staphylococcus aureus was 69% higher than the excess cost attributable to infections caused by other microorganisms. Conclusions. SSI after hip replacement continues to be a costly complication from the hospital perspective. Costs due to SSI can be used to prioritise preventive interventions to monitor and control HAI (AU)

The cost of infection in hip arthroplasty: a matched case-control study. / El coste de la infección en artroplastia de cadera: estudio de casos y controles emparejado.

OBJECTIVE: Surgical site infection (SSI) represents 30% of all causes of health care-associated infection (HAI) and is one of the most dreaded complications in surgical patients. We estimated the excess direct costs of SSI using a matched nested case-control study in acute-term care at Ramon y Cajal University Hospital in Spain. MATERIAL AND METHOD: Cases were patients who developed a first episode of SSI according to the criteria established by the CDC's National Healthcare Safety Network. Controls were matched to cases in 1:1 ratio taking into account the American Society of Anesthesiologists score, age, sex, surgery date, and principal diagnosis. RESULTS: This study found that infection in hip replacement increased direct costs by 134%. Likewise, the excess cost due to the infections caused by methicillin resistant Staphylococcus aureus was 69% higher than the excess cost attributable to infections caused by other microorganisms. CONCLUSIONS: SSI after hip replacement continues to be a costly complication from the hospital perspective. Costs due to SSI can be used to prioritise preventive interventions to monitor and control HAI.

Emergence and outbreak of carbapenemase-producing KPC-3 Klebsiella pneumoniae in Spain, September 2009 to February 2010: control measures.

This report describes the epidemiological features of the first outbreak caused by KPC3 carbapenemase-producing Klebsiella pneumoniae (KPC-3-KP) in Spain and how it was effectively controlled. From 16 September 2009 to the end of February 2010, seven patients infected or colonised with KPC-3-KP were detected. Stool surveillance cultures were recovered from patients, doctors, nurses, nursing assistants, cleaners and hospital porters working in the affected units. Hand swabs were taken from workers and patients' relatives for culturing. Environmental samples were also taken. Patients infected or colonised with KPC-3-KP were placed in single rooms under contact precautions and 4% chlorhexidine soap was used for their daily hygiene. Staff attended educational seminars and workshops on hand hygiene and isolation of patients. An alcohol-based disinfectant was used for surface cleaning and disinfecting. The floor was cleaned with a disinfectant containing benzalkonium chloride and didecyldimethylammonium. All samples collected were negative for KPC-3-KP. After implementing the control measures, no further cases were reported in the affected units. All cases had comorbidities, long hospital stay and aggressive/intensive antimicrobial treatment. This study emphasises the importance of early intensification of infection control to interrupt the transmission of KPC-producing organisms.

Factores asociados a ingreso en unidad de cuidados intensivos enpacientes hospitalizados por Influenza pandémica A/H1N1 2009 / Factors associated to admission to Intensive Care in patients hospitalized due to pandemic Influenza A/H1N1 2009

Objetivo: Determinar los factores de riesgo para ingreso en la unidad de cuidados intensivos (UCI) en pacientes con infección por virus pandémico (H1N1) 2009.Dise˜no: Estudio de cohorte retrospectivo en pacientes ingresados por Influenza A/H1N1 2009durante el periodo pandémico. Ámbito: Hospital Universitario Ramón y Cajal. Pacientes: Todos los pacientes ingresados con reacción en cadena de la polimerasa en transcripción inversa (RT-PCR) positiva para virus de Influenza A/H1N1 2009.Variables de interés: Historia de factores de riesgo para Influenza grave, vacunación para Influenza estacional 2008-2009, síntomas y signos clínicos, pruebas de laboratorio, hallazgos en la radiografía de tórax, tiempo en la administración de antiviral y estancia hospitalaria. Resultados: La mediana de edad de 100 casos fue 38 años (mínimo: 4 meses, máximo: 80 años).El 77% tuvo al menos un factor de riesgo, siendo el asma la comorbilidad más frecuente en los menores de 18 años y el hábito tabáquico en los mayores. La mediana de tiempo entre el comienzo de los síntomas y el inicio de antiviral fue 3 días (mínimo: 0 días, máximo: 18 días).El 19% de los pacientes fueron ingresados en UCI y el 2% fallecieron por gripe. En el análisis multivariable, enfermedad metabólica y presencia de infiltrados en la radiografía de tórax se asociaron de forma significativa a ingreso en la UCI. Conclusión: Una radiografía de tórax anormal en el momento del ingreso, junto con la presencia de ciertas comorbilidades, especialmente enfermedades metabólicas, sugieren la posibilidad de peor pronóstico de gripe pandémica (H1N1) 2009 (AU)

Objective: The present study explores the possible factors related to severe cases of pandemic flu. Design: A retrospective cohort study was conducted in patients hospitalized with Influenza A/H1N1 2009 during the pandemic period. Setting: Ramon y Cajal University Hospital (Madrid, Spain).Patients: All hospitalized patients with positive RT-PCR (real-time polymerase chain reaction)for Influenza A/H1N1 2009 virus. Main variables: The main variables collected were: history of risk factors for severe Influenza, history of immunization, clinical presentation, laboratory tests, chest X-ray report, administration of antiviral treatment, and hospital stay. Results: The median age of the 100 cases was 38 years (range 4 months to 80 years). Seventy seven percent of the patients had at least one risk factor. Asthma was the most common factor among patients younger than 18 years, versus smoking in the older subjects. Antiviral therapy was initiated a median time of three days (range 0 to 18 days) after the onset of illness. Nineteen percent of the patients were admitted to Intensive Care, and 2% died. Metabolic disease and abnormal chest X-ray findings were factors associated to admission to the ICU. Conclusion: As in other studies, abnormal chest X-ray findings upon admission and metabolic disease were related to poor outcomes of 2009 pandemic Influenza A (H1N1) infection in our patients (AU)

Incidencia y factores asociados a la infección de localización quirúrgica tras artroplastia de cadera / Incidence and associated factors of surgical site infections after hip arthroplasty

Introducción. La infección de localización quirúrgica (ILQ) posterior a artroplastia de cadera es la complicación más temida causando hospitalización prolongada, incremento de morbilidad, mortalidad y altos costes. La identificación de los factores implicados en su aparición puede orientar intervenciones para la reducción del riesgo de infección. Material y métodos. Los datos de ILQ y sus factores de riesgo fueron prospectivamente recolectados por el sistema de vigilancia de infección asociada a la atención sanitaria INCLIMECC (Indicadores Clínicos de Mejora Continua de la Calidad), a partir de 3.067 procedimientos de artroplastia de cadera realizados en el Hospital Universitario Ramón y Cajal entre octubre de 1999 y diciembre de 2009. Análisis de regresión logística binaria multivariable con el software SPPS versión 15.0 para Windows fue utilizado para la construcción de un modelo predictivo de ILQ. Resultados. La incidencia global de ILQ fue de 2,71 casos por cada 100 intervenciones. En el análisis univariable, la mayoría de los factores analizados estuvieron asociados al riesgo de infección articular. El análisis de regresión logística multivariable sólo identificó tres factores independientemente asociados a ILQ: edad, estancia preoperatoria e índice NHSN (p<0,05). Conclusiones. Aunque el índice NHSN y la estancia preoperatoria son potenciales marcadores de la presencia de otros factores para ILQ como diabetes mellitus, obesidad, neoplasia y artritis reumatoide, el análisis de éstos por separado podría aumentar el poder predictivo del modelo multivariable (AU)

Introduction. Prosthetic joint infection after hip arthroplasty is the most feared complication and is responsible for prolonged hospitalisation and an increased risk of morbidity and mortality. To identify the factors involved in its onset may lead to interventions to reduce the risk of infection. Material and methods. We prospectively reviewed data collected from the health care infection surveillance system (INCLIMECC) on 3067 hip arthroplasties undertaken in the Ramon y Cajal University Hospital between October 1999 and December 2009. Multivariate analysis was performed using logistic binary regression to create mathematical models to predict joint infection after hip arthroplasty. Results. The overall incidence of joint infection after hip arthroplasty was 2.71%. Unadjusted univariate analysis showed multiple variables associated with joint infection. After multivariable logistic regression analysis, we found the following independent predictors: age, days of hospitalisation prior to the intervention and risk index of the National Healthcare Safety Network (NHSN) (p<.05). Conclusions. NHSN risk index and the days of hospitalisation prior to the intervention are associated to other risk factor of joint infection after hip arthroplasty, such as Diabetes Mellitus, obesity and rheumatoid arthritis. Nevertheless is important to analyse these factors separately to increase the predictive power of the multivariate model (AU)

[Factors associated to admission to Intensive Care in patients hospitalized due to pandemic Influenza A/H1N1 2009]. / Factores asociados a ingreso en unidad de cuidados intensivos en pacientes hospitalizados por Influenza pandémica A/H1N1 2009.

OBJECTIVE: The present study explores the possible factors related to severe cases of pandemic flu. DESIGN: A retrospective cohort study was conducted in patients hospitalized with Influenza A/H1N1 2009 during the pandemic period. SETTING: Ramon y Cajal University Hospital (Madrid, Spain). PATIENTS: All hospitalized patients with positive RT-PCR (real-time polymerase chain reaction) for Influenza A/H1N1 2009 virus. MAIN VARIABLES: The main variables collected were: history of risk factors for severe Influenza, history of immunization, clinical presentation, laboratory tests, chest X-ray report, administration of antiviral treatment, and hospital stay. RESULTS: The median age of the 100 cases was 38 years (range 4 months to 80 years). Seventy-seven percent of the patients had at least one risk factor. Asthma was the most common factor among patients younger than 18 years, versus smoking in the older subjects. Antiviral therapy was initiated a median time of three days (range 0 to 18 days) after the onset of illness. Nineteen percent of the patients were admitted to Intensive Care, and 2% died. Metabolic disease and abnormal chest X-ray findings were factors associated to admission to the ICU. CONCLUSION: As in other studies, abnormal chest X-ray findings upon admission and metabolic disease were related to poor outcomes of 2009 pandemic Influenza A (H1N1) infection in our patients.

Incidencia de infección nosocomial en cirugía abierta de próstata / Incidence of nosocomial infection in open prostate surgery

Objetivos: Conocer las tasas de infección nosocomial en cirugía abierta de próstata y valorar la aplicación de los protocolos de preparación prequirúrgica y profilaxis antibiótica preoperatoria establecidos en tres hospitales públicos de la Comunidad de Madrid. Material y métodos: Estudio prospectivo observacional multicéntrico, incluyendo a todos los pacientes intervenidos quirúrgicamente en los servicios sometidos a vigilancia e ingresados durante más de 48 horas, entre el 1 de enero y el 31 de diciembre de 2009. Fueron vigilados desde el ingreso hasta el alta. Resultados: La tasa de infección hospitalaria observada fue del 3,38%. La infección más frecuente fue la de localización quirúrgica, con una incidencia del 2,77% (superficial = 1,23%; profunda = 0,31%; órgano-espacio = 1,23%). El porcentaje de profilaxis quirúrgicas adecuadas, tanto en indicación como en elección del antibiótico, inicio y duración, respecto a todos aquellos pacientes que la recibieron fue del 47,42%. Según los datos obtenidos de las historias clínicas el porcentaje de pacientes en los que se cumplió correctamente el protocolo de preparación prequirúrgica fue del 92%. Conclusiones: Los resultados obtenidos en este estudio multicéntrico, no sólo pueden servir como referencia a otros hospitales públicos, sino que también son comparables con otros sistemas de vigilancia internacionales. La vigilancia y control de las infecciones asociadas a la asistencia sanitaria deben ser un aspecto clave en los programas de calidad asistencial y seguridad del paciente (AU)

Objectives: To know the rate of nosocomial infections in open prostate surgery and to assess the application of pre-surgery preparation and preoperative antibiotic prophylaxis protocols at three public hospitals in the Autonomous Community of Madrid. Materials and methods: Prospective observational and multicentre study, including all the patients operated on at the services monitored and admitted for more than 48 hours between1 January and 31 December 2009. They were monitored from admittance until their discharge. Results: The rate of hospital infection observed was 3.38%. The most frequent infection was surgical localization, with an incidence rate of 2.77% (superficial = 1.23%; deep = 0.31%; organ space= 1.23%). The percentage of appropriate surgical prophylaxis, both in the indication and in the selection of antibiotics, initiation and duration, with respect to all those patients that received it, was 47.42%. According to the data obtained from their clinical records, the percentage of patients in which the pre-surgery preparation protocol was correctly complied with, was 92%. Conclusions: The results obtained in this multicentre study can serve not only as a reference to other public hospitals, but they are also comparable to other international monitoring systems. Monitoring and controlling infections associated with healthcare must be a key aspect in Patient Care and Safety programmes (AU)

[Incidence of nosocomial infection in open prostate surgery]. / Incidencia de infección nosocomial en cirugía abierta de próstata.

OBJECTIVES: To know the rate of nosocomial infections in open prostate surgery and to assess the application of pre-surgery preparation and preoperative antibiotic prophylaxis protocols at three public hospitals in the Autonomous Community of Madrid. MATERIALS AND METHODS: Prospective observational and multicentre study, including all the patients operated on at the services monitored and admitted for more than 48 hours between 1 January and 31 December 2009. They were monitored from admittance until their discharge. RESULTS: The rate of hospital infection observed was 3.38%. The most frequent infection was surgical localization, with an incidence rate of 2.77% (superficial=1.23%; deep=0.31%; organ-space=1.23%). The percentage of appropriate surgical prophylaxis, both in the indication and in the selection of antibiotics, initiation and duration, with respect to all those patients that received it, was 47.42%. According to the data obtained from their clinical records, the percentage of patients in which the pre-surgery preparation protocol was correctly complied with, was 92%. CONCLUSIONS: The results obtained in this multicentre study can serve not only as a reference to other public hospitals, but they are also comparable to other international monitoring systems. Monitoring and controlling infections associated with healthcare must be a key aspect in Patient Care and Safety programmes.